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TXD series 
USER MANUAL 
 
 
 
Turbosound Ltd., Star Road, Partridge Green, West Sussex RH13 8RY UK 
Tel: +44 (0)1403 711447 Fax: +44 (0)1403 710155 
web: www.turbosound.com
Issue 1.3  July 2006 
Copyright © 2006 Turbosound Ltd.                                                                                                                                                                                                                                                                            
                    
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                        user manual  TXD series  Contents    Introduction ..................................................................................................................................... 4  Thanks .......................................................................................................................................... 4  Features ........................................................................................................................................... 5  Product Rang
                    
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                        user manual  TXD series  Use of thread locking compounds .......................................................................................... 29  Appendix D.................................................................................................................................... 30  Limited Warranty .......................................................................................................................... 30  Warranty Coverage .......................................
                    
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                        user manual  TXD series  INTRODUCTION    Thanks  Thank you for choosing a TURBOSOUND TXD series loudspeaker product for your application.  Please spare a little time to read the contents of this manual, so that you can obtain the best  possible performance from this unit.  All TURBOSOUND products are carefully engineered for world class performance and reliability.  If you would like further information about this or any other TURBOSOUND product, please  contact us. Detailed product information 
                    
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                        user manual  TXD series  FEATURES    • Superb audio quality: carefully designed and matched loudspeaker drive units are used  to give  you exceptional performance and many years of reliable, trouble free operation.  • High quality loudspeaker components are used throughout the range. Low frequency  drivers are specified for high sensitivity and durability, while high frequency drivers are  selected for consistent and reliable performance.  • High frequency protection system: two-stage thermal ov
                    
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                        user manual  TXD series  PRODUCT RANGE SUMMARY  TXD-081  The TXD-081 is a compact two-way loudspeaker recommended for portable speech and music  reinforcement in an easily transportable cabinet, as well as fixed installation applications requiring  professional quality background sound.  It is an all-passive design featuring an 8” low frequency driver and a 1” high frequency  compression driver on a 100ºH x 60ºV Converging Elliptical Waveguide™ HF horn. The drive units  are matched with an inter
                    
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                        user manual  TXD series  the rear of the cabinet for use with Turbosound wall and ceiling brackets. Two Neutrik Speakon  NL4MP speaker connectors are located on the rear panel, providing input and parallel connections  to additional TXD series cabinets or bass enclosures.    TXD-151  The TXD-151 is a trapezoidal passive two-way loudspeaker enclosure designed for use in a wide  variety of live sound, fixed installation and mobile DJ applications that require professional sound  quality in an easi
                    
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                        user manual  TXD series  passive crossover network also protects the high frequency compression driver from being  overdriven.  The TXD-252 is ideal live music in bars and pubs, or for installing as a permanent system for pubs  and clubs. It can be suspended vertically, or horizontally with the HF horn rotated, using the M10  rigging points. Due to the trapezoidal cabinet shape it can be positioned close to a ceiling where  space is limited.    TXD-115  The TXD-115 is a front-loaded low frequenc
                    
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                        user manual  TXD series  bass cabinet to provide wider horizontal dispersion. Four recessed flush handles are provided for  easy lifting and carrying and the cabinet is pre-drilled for optional T4 wheels. A grey powder- coated perforated steel mesh grille protects the drive units from damage.  M10 rigging points are provided on the top and rear of the cabinet, which allow single cabinets to  be suspended and angled in fixed installations using optional M10 shoulder eyebolts.  Two Neutrik Speakon
                    
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                        user manual  TXD series  The enclosure is fitted with internal M10 threaded rigging points on the top and rear, which allow  single cabinets to be suspended and angled in fixed installations using optional M10 shoulder  eyebolts.  The cabinet is constructed from 15mm (5/8”) birch plywood, and is finished in a durable semi-matt  textured TurboBlue™ paint. Two flush handles are provided on the sides for easy lifting and  carrying. Two Neutrik Speakon NL4MP connectors provide input and parallel con
                    
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                        user manual  TXD series  matched with a third order passive crossover network to ensure a seamless transition between the  HF and LF devices.  The crossover network incorporates a two-stage thermal overload protection system which  prevents damage to the high frequency driver, reacting instantly to large transient peaks while still  allowing wide dynamic range to be maintained. Although the protection system is transparent at  normal operating levels, as the level increases the signal is gradual
                    
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                        user manual  TXD series  SYSTEM REQUIREMENTS  TXD series enclosures (with the exception of the TXD-252 and TXD-15M) are passive loudspeaker  systems. This means that they require only one amplifier channel for correct operation, the  frequency splitting between the low frequency driver and the high frequency driver or mid and  high frequency driver being accomplished by the internal passive crossover network built into  each enclosure.  If low frequency enclosures are used to extend low frequenc
                    
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                        user manual  TXD series  Bi-amplified operation  TXD series two-way loudspeakers can also be operated in bi-amplified mode together with any of  the available bass enclosures, in order to give enhanced audio performance and greater overall  sound pressure level. In this case one amplifier will power the full range loudspeakers, while  another is required to power the bass cabinets. An external 2-in, 4-out crossover, such as the LMS- D4 digital loudspeaker management system, is required with a cr
                    
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                        user manual  TXD series  Amplifier considerations  Turbosound speaker enclosures should be driven by high quality power amplifiers designed for  true professional use. Such amplifiers will have balanced inputs, DC and RF fault protection, and  well-designed cooling systems for reliability.   The program power listed in the loudspeaker’s technical specification is the best guide to the size  of amplifier required for general-purpose applications. The amplifier should therefore be capable  of deli
                    
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                        user manual  TXD series  Dispersion  TXD series enclosures are designed to provide relatively wide (70 °) horizontal coverage. This  allows the majority of live sound applications to be covered with single enclosures placed  individually to take advantage of this performance feature, for example either side of a stage in a  pub or small club environment as shown below. For best results the loudspeakers should be  either mounted on tripod stands or supported on straight poles on top of TXD series
                    
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                        user manual  TXD series  SYSTEM CONNECTIONS  The following diagrams illustrate several TXD series applications, ranging from a simple live  performance system of just two loudspeakers to a multi-zoned nightclub system.    Passive two way system  Connect a second pair of loudspeakers in parallel (shown with dotted lines) if required, using the  link connections on the rear panel.        Passive two-way system (TXD-252)          TXD series manual  page 16                                           
                    
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                        user manual  TXD series  Passive full-range system with subs  Connect the power amplifier first to the bass cabinets, and then to the two-way loudspeakers  using the link connections.          Passive full-range system with subs  Connect to the bass cabinets as in the example above.          TXD series manual  page 17                                                                                                                                                                                     
                    
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                        user manual  TXD series  Passive full-range system with subs        Live performance monitor system  Take auxiliary feeds from the mixer via a graphic equaliser to two separate channels of a power  amplifier. Connect a second unit in parallel to form mirror-image pairs.      TXD series manual  page 18                                                                                                                                                                                                      
                    
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                        user manual  TXD series  Bi-amplified system with subs    TXD series manual  page 19                                                                                                                                                                                                                                                                                                                                                                                                                                
                    
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                        user manual  TXD series  Club system with multiple zones     TXD series manual  page 20